Validation of a dynamic model for wood pellet boilers and stoves (2009)
Persson, Tomas, Fiedler, Frank, Nordlander, Svante, Bales, Chris, Paavilainen, Janne
Optimising systems with wood pellet boilers or stoves using simulations requires realistic computer models. The objective of this work was to develop and verify a mathematical model for wood pellet...
A new concept for combisystems characterization: The FSC method (2009)
Letz, Thomas, Bales, Chris, Perers, Bengt
Solar combisystems are relatively complex systems with many different components and operational parameters. Before the beginning of IEA-SHC Task 26 ("solar combisystems"), no method was available...
Design method for solar heating systems in combination with pellet boilers/stoves (2008)
Frank Fiedler, Chris Bales, Tomas Persson, Er Thür
In this study an optimization method for the design of combined solar and pellet heating systems is presented and evaluated. The paper describes the steps of the method by applying it for an example...
Bales, Chris, Gantenbein, Paul, Jaenig, Dagmar, Kerskes, Henner, Summer, Karola, Van Essen, Martijn, ...
Five laboratory prototypes of thermochemical and sorption storage are described in this report as well as the material characterisation of a promising thermochemical reaction with MgSO4.7H2O....
Store Models for Chemical and Sorption Storage Units : Report B5 of Subtask B (2008)
Bales, Chris, Jaenig, Dagmar, Kerskes, Henner, Zondag, Herbert
Storage models have been developed for four of the storage concepts that have been studied within Subtask B of IEA-SHC Task 32. These are available from the authors. They are: 1. Thermo-chemical...
Final Report of Subtask B “Chemical and Sorption Storage” : Report B7 of Subtask B (2008)
Bales, Chris, Gantenbein, Paul, Jaenig, Dagmar, Kerskes, Henner, Van Essen, Martijn, Weber, Robert, ...
This report is the final report of a Subtask of the Task 32 “Advanced Storage Concepts for solar and low energy buildings” of the Solar Heating and Cooling Programme of the International Energy...
Bales, Chris, Gantenbein, Paul, Jaenig, Dagmar, Kerskes, Henner, Summer, Karola, Van Essen, Martijn, ...
Five laboratory prototypes of thermochemical and sorption storage are described in this report as well as the material characterisation of a promising thermochemical reaction with MgSO4.7H2O....
Store Models for Chemical and Sorption Storage Units : Report B5 of Subtask B (2008)
Bales, Chris, Jaenig, Dagmar, Kerskes, Henner, Zondag, Herbert
Storage models have been developed for four of the storage concepts that have been studied within Subtask B of IEA-SHC Task 32. These are available from the authors. They are: 1. Thermo-chemical...
Final Report of Subtask B “Chemical and Sorption Storage” : Report B7 of Subtask B (2008)
Bales, Chris, Gantenbein, Paul, Jaenig, Dagmar, Kerskes, Henner, Van Essen, Martijn, Weber, Robert, ...
This report is the final report of a Subtask of the Task 32 “Advanced Storage Concepts for solar and low energy buildings” of the Solar Heating and Cooling Programme of the International Energy...
Solar CombiSystems Promotion and Standardisation (COMBISOL project) (2008)
Albaric, Michael, Bales, Chris, Drueck, Harald, Gagnepain, B., Kuhness, G., Letz, T., ...
Solar combisystems (SCS) are solar heating installations providing space heating as well as domestic hot water in buildings. Within a global solar thermal energy strategy, SCS are a key element to...
Yazdanshenas, Eshagh, Furbo, Simon, Bales, Chris
Theoretical investigations have shown that solar combisystems based on bikini tanks for low energy houses perform better than solar domestic hot water systems based on mantle tanks. Tank-in-tank...
Feasibility of Solar Thermal Assisted Small Scale District Heating in Nordic Countries (2008)
Paavilainen, Janne, Bales, Chris
A feasibility study for combining solar thermal plants with small scale 0.5-2 MWth mobile district heating plants under north European conditions was done. The study was done from a heat service...
Monitoring results of a new developed combined pellet and solar heating system (2008)
Fiedler, Frank, Bales, Chris, Vestlund, Johan
In this study the monitoring results of prototype installation of a recently developed solar combisystem have been evaluated. The system, that uses a water jacketed pellet stove as auxiliary heater,...
Reduction of co-emissions by combining pellet and solar heating systems (2008)
Fiedler, Frank, Persson, Tomas, Bales, Chris
Emissions are an important aspect of a pellet heating system. High carbon monoxide emissions are often caused by unnecessary cycling of the burner when the burner is operated below the lowest...
Review of an International Master Programme in Solar Energy Engineering (2008)
Lindberg, Eva, Fiedler, Frank, Bales, Chris, Rönnelid, Mats
The European Solar Engineering School ESES is a one-year master programme that started in 1999 at the Solar Energy Research Center, SERC, Dalarna University College. The programme, run in English,...
Fiedler, Frank, Bales, Chris, Persson, Tomas, Nordlander, Svante
Emission and electricity consumption are important aspects of a pellet heating system. Low noxious emissions, particularly carbon monoxide, are a measure of a well-performing system. High carbon...
Optimisation method for solar heating systems in combination with pellet boilers/stoves (2007)
Fiedler, Frank, Bales, Chris, Persson, Tomas
In this study an optimisation method for the design of combined solar and pellet heating systems is presented and evaluated. The paper describes the steps of the method by applying it for an example...
Monitoring results of combined pellet and solar heating system (2007)
Fiedler, Frank, Bales, Chris, Vestlund, Johan
In this study the monitoring results of prototype installation of a recently developed solar combisystem have been evaluated. The system, that uses a water jacketed pellet stove as auxiliary heater,...
Laboratory Prototypes of Thermo-Chemical and Sorption Storage Units : Report B3 of Subtask B (2007)
Bales, Chris, Jaenig, Dagmar, Gantenbein, Paul, Weber, Robert
Four laboratory prototypes are described in this report. Measured results and projected heat storage densities for units of 70 and 1000 kWh storage for single family houses are reported. All four...
Laboratory Prototypes of Thermo-Chemical and Sorption Storage Units : Report B3 of Subtask B (2007)
Bales, Chris, Jaenig, Dagmar, Gantenbein, Paul, Weber, Robert
Four laboratory prototypes are described in this report. Measured results and projected heat storage densities for units of 70 and 1000 kWh storage for single family houses are reported. All four...
Simon Furbo, Alexander Thür, Ph. D. Student, Elsa Andersen, Chris Bales, Frank Fiedler, ...
Solar thermal components adapted to common building standards (SCAS) • Higly attractive new products for architects, the construction industry and private home owners • Three new concepts...
Thermal performance of combined solar and pellet heating systems (2006)
Fiedler, Frank, Nordlander, Svante, Persson, Tomas, Bales, Chris
Various pellet heating systems are marketed in Sweden, some of them in combination with a solar heating system. Several types of pellet heating units are available and can be used for a combined...
Computer modelling of wood pellet stoves and boilers connected to solar heating systems (2006)
Nordlander, Svante, Persson, Tomas, Fiedler, Frank, Rönnelid, Mats, Bales, Chris
When optimizing systems for wood pellet and solar heating, there is a need for realistic computer models of stoves and boilers in order to perform simulation studies. The objective of this work was...
Persson, Tomas, Fiedler, Frank, Rönnelid, Mats, Bales, Chris
This study focus on how wood pellets and solar heating systems for single-family houses should be designed and controlled to reach high efficiency and to reduce the CO-emissions. A recently developed...
Design method for solar heating systems in combination with pellet boilers/stoves (2006)
Fiedler, Frank, Bales, Chris, Persson, Tomas, Thür, Alexander
In this study an optimization method for the design of combined solar and pellet heating systems is presented and evaluated. The paper describes the steps of the method by applying it for an example...
European Solar Engineering School ESES : Past and Future (2006)
Bales, Chris, Lindberg, Eva, Fiedler, Frank, Rönnelid, Mats
The European Solar Engineering School ESES is a one-year masters program that started in 1999 at the Solar Energy Research Center SERC, Dalarna University College. It has been growing in popularity...
Solar Cooling and Storage with the Thermo-Chemical Accumulator (2006)
The Thermo-Chemical Accumulator, a three-phase chemical heat pump with integral thermal storage, has been tested and modelled in the TRNSYS simulation environment. Base case system models for solar...
European Solar Engineering School ESES - Past and Future (2006)
Bales, Chris, Lindberg, Eva, Fiedler, Frank, Rönnelid, Mats
The European Solar Engineering School ESES is a one-year masters program that started in 1999 at the Solar Energy Research Center SERC, Dalarna University College. It has been growing in popularity...
Design and fabrication of a portable Fresnel reflector (2006)
This paper presents a feasibility study of a portable Fresnel reflector that was designed and constructed using inexpensive materials and then tested. An aluminium plastic laminated reflector was...
Development of a Compact Solar Combisystem (2006)
Thür, Alexander, Furbo, Simon, Fiedler, Frank, Bales, Chris
Within the frame of the project REBUS, "Competitive solar heating systems for residential buildings", which is financed by Nordic Energy Research, a new type of compact solar combisystem with high...
Nordic Energy Research Cooperation on Solar Combisystems (2006)
Furbo, Simon, Thür, Alexander, Fiedler, Frank, Bales, Chris, Rekstad, John, Meir, Michaela, ...
This paper describes ongoing research on solar combisystems for the Nordic and Baltic countries carried out within the projects "Competitive solar heating systems for residential buildings" and...
Solar thermal components adapted to common building standards (SCAS) (2006)
Furbo, Simon, Thür, Alexander, Bales, Chris, Fiedler, Frank, Rekstad, John, Meir, Michaela, ...
Pilot versions of a solar heating/natural gas burner system, of a solar heating/pellet burner system and of a façade/roof integrated polymeric collector have been installed in the summer of 2006 in...
Competitive Solar Heating Systems for Residential Buildings (REBUS) (2006)
Furbo, Simon, Thür, Alexander, Bales, Chris, Fiedler, Frank, Rekstad, John, Meir, Michaela, ...
Research on solar combisystems for the Nordic and Baltic countries have been carried out. The aim was to develop competitive solar combisystems which are attractive to buyers and to educate experts...
Chapter 12: Sorption and Themo-Chemical Storage (2005)
Bales, Chris, Gantenbein, P., Hauer, A., Jaehnig, D., Henning, H-M., Nuñez, T., ...
Fiedler, Frank, Thür, Alexander, Bales, Chris, Furbo, Simon
At the beginning of 2003 the four year long research project REBUS on education, research, development and demonstration of competitive solar combisystems was launched. Research groups in Norway,...
Advanced Storage Concepts For Solar Houses And Low Energy Buildings - IEA-SHC Task 32 (2005)
Bales, Chris, Hadorn, J-C, Drück, H., Streicher, W.
This paper presents the current status of the work in Task 32 (Advance Storage Concepts for Solar and Low Energy Buildings) of the International Energy Agency’s Solar Heating and Cooling Programme...
TCA Evaluation : Lab Measurements, Modelling and System Simulations (2005)
Bales, Chris, Nordlander, Svante
The study reported here is part of a large project for evaluation of the Thermo-Chemical Accumulator (TCA), a technology under development by the Swedish company ClimateWell AB. The studies...
Chemical and Sorption Storage - Selection of Concepts : Report B1 of Subtask B (2005)
Bales, Chris, Gantenbein, Paul, Jaenig, Dagmar, Kerskes, Henner, Visscher, Klaas
Bales, Chris, Gantenbein, Paul, Hauer, Andreas, Henning, Hans-Martin, Jaenig, Dagmar, Kerskes, Henner, ...
Chemical and Sorption Storage - Selection of Concepts : Report B1 of Subtask B (2005)
Bales, Chris, Gantenbein, Paul, Jaenig, Dagmar, Kerskes, Henner, Visscher, Klaas
Bales, Chris, Gantenbein, Paul, Hauer, Andreas, Henning, Hans-Martin, Jaenig, Dagmar, Kerskes, Henner, ...
Sol till både vatten och värme, Enkla åtgärder kan öka solvärmeutbytet (2004)
Rönnelid, Mats, Bales, Chris, Lorenz, Klaus, Nordlander, Svante, Perers, Bengt, Persson, Tomas
Heat Losses and Thermal Performance of Commercial Combined Solar and Pellet Heating Systems (2004)
Fiedler, Frank, Nordlander, Svante, Persson, Tomas, Bales, Chris
Various pellet heating systems are marketed in Sweden, some of them in combination with a solar heating system. Several types of pellet heating units are available and can be used for a combined...
ESES, A European Master's Program In Solar Energy Engineering (2004)
Lindberg, Eva, Broman, Lars, Bales, Chris
The first group of students was admitted to the European Solar Engineering School, a master’s level two-semester program at Dalarna University in Sweden, in August 1999. Now that the fifth group is...
Development of the Thermo Chemical Accumulator (TCA) (2004)
Bales, Chris, Setterwall, F, Bohlin, G
The Thermo Chemical Accumulator (TCA) is a chemical heat pump driven by low temperature heat that has integral heat storage with high energy density. This makes the device very suitable for solar...
Heat losses and thermal performance of commercial combined solar and pellet heating systems (2004)
Fiedler, Frank, Persson, Tomas, Bales, Chris, Nordlander, Svante
Various pellet heating systems are marketed in Sweden, some of them in combination with a solar heating system. Several types of pellet heating units are available and can be used for a combined...
COMBITEST : a new test method for thermal stores used in solar combisystems / (2004)
Bales, Chris., Chalmers Tekniska Hogskola.
Thesis (Ph. D.)--Chalmers University of Technology, 2004.
External DHW Units for Solar Combisystems (2003)
This article compares seven different external DHW units, comprising flat plate heat exchanger and flow control, with a reference method for preparing hot water. These DHW units use different control...
Evaluation of Solar Thermal Combisystems for the Swedish Climate (2000)
Lorenz, Klaus, Bales, Chris, Persson, Tomas
This paper summarises the results of previous work in the area and then goes on to describe the results of a more detailed simulation study of a number of different system designs. For these systems,...
Evaluation of storage configurations with internal heat exchangers (1998)
Dahm, Jochen, Bales, Chris, Lorenz, Klaus, Dalenbäck, Jan-Olof
An international standard, ISO/DP 9459-4A, 1996 has been proposed to establish a uniform standard of quality for small solar heating systems. In this proposal, system components are tested separately...
Comparison of External DHW Load Side Heat Exchange Units for Small Solar Storage Systems (1997)
Lorenz, Klaus, Persson, Tomas, Bales, Chris
This paper compares the performance of four load side heat exchange units that could be used with storage tanks in solar heating systems to make domestic hot water (DHW). The unit consists of a flat...
Performance comparison of combitanks using six-day test (1997)
Lorenz, Klaus, Bales, Chris, Broman, Lars
This paper compares the performance of configurations of solar heating combitank systems, which are designed to provide both space heating and domestic hot water (DHW), using a specially designed...
Dahm, J, Bales, Chris, Lorenz, Klaus, Dalenbäck, J-O
An international standard, ISO/DP 9459-4 has been proposed to establish a uniform standard of quality for small, factory-made solar heating systerns. In this proposal, system components are tested...
Provning av tappvattenautomater kopplade till ackumulatortank (1996)
Persson, Tomas, Lorenz, Klaus, Bales, Chris
Dagens vanliga ackumulatortanksystem har för dålig skiktning i ackumulatortanken, vilket leder till försämrad effektivitet hos systemen. För att förbättra den krävs komponenter, som kan ladda...
Provning av ackumulatorsystem för solvärmeanläggningar (1995)
Lorenz, Klaus, Bales, Chris, Börjesson, Kent
Inom projektet provades 10 konfigurationer av samma ackumulatortank. Tankarna utsattes under kontrollerade förhållanden för en 6-dagars testcykel. Under testet tillfördes varje tank värme från...
Villasystem för solvärme (1993)
Lorenz, Klaus, Bales, Chris, Börjesson, Kent, Broman, Lars
Del 1: Innehållsförteckning och korta sammanfattningar DEL 2: Verksamhetsberättelsen för perioden maj 1992 till april 1993 beskriver de arbeten som har gjorts av villasolvärmegruppen på SERC...
During November and December 1992 I visited several groups involved with renewable energy, most of them dealing with education. These groups and their work are described briefly in this report. The...